Calculating-machine.



W. P. QUBNTELL. v CALCULATING MACHINE. APPLICATION FILED MAY 18, 1907.

Fig.2

ATTORNEY PATEN TED MAR. 10, 1908.

UNITED STATES PATENT OFFICE WILLIAM P. QUENTELL, OF STAMFORD, CONNECTICUT, ASSIGNOR TC AGNES It. QUENTELL,

0F STAMFORD, CONNECTICUT.

CALCULATING-MACHINE Specification of Letters Patent.

Patented March 10, 1908.

Application filed May 18, 1907. Serial No. 374,482.

To all 'whomit may concern:

Be it known that I, WILLIAM P. QUENTELL, a citizen of the United States, residing at Stamford, in the county of Fairfieldand State of Connecticut, have invented new and useful Improvements in Calculating-Ma chines, of which the following is a specification;

This inventionrelates to a device which can. be madesimple and chea and at the same time be accurate and relia le.

This invention is set forth in the following specification and claims and illustrated in t e annexed drawing, in which:

Figure 1 is a sectional side elevation of a and on which shaft 9 are carried the number wheels 0.

This shaft g has secured thereto and is driven by the said ratchet d actuated by the pawl c. 3

The pawl is shown on carrier f swinging on the shaft g of the ratchet. On said shaft also swings a lock it in form of an are or other suitable shape. A pin L of pin and slot connection allows thelock a certain movement independent of the pawl carrier. When the lock is incontact with the tail part or pin is of the pawl the latter is locked to the ratchet and such ratchet cannotskip or make a step independent of the pawl.

An actuator or driving bar m is shown for the pawl and the awl'lock is actuated by a lock bar n. The ock being made to engage the pawl and the latter then driving the ratchet both are made to swing forward together and the ratchet cannot move ahead of the pawl so that inaccuracy is provided against. On the return the lock first releases the pawl and then the latter returns;

or ratchets back over the ratchet teeth. Two bars m and n are used, because if only one bar, for instance a, is used, the momen- Ascries'of such gear connection is the usual tum of'the ratchet when the bar is suddenly stopped carries the ratchet beyond the proper stopping point. The momentum of" the ratchet d would carry the pawlc and its carrier f the length of the slot of the connection at i, and consequentlythe pin 7c would no longer be under the disk 7i and the pawl would be no longer locked to its ratchet, and

the ratchet d'would befree to pass by its momentum or to kee on moving A lock pawl '0 prevents bac ward motion of the ratchet. The bars m nhave a looseconnection as seen by a in p of a pin and slot connection. The 100 bar can thus move a certain distance in advance of the driving bar m so that such lock bar will first set the lock "into position and then the bar 12, striking the pin p will cause the bar m to move with bar 'n so that both bars move to ether and't'he numbering or calculating mec anism is actuated. It is] necessary especially in quick working to lock thepawl'c to the ratchet d so that the mechanism will not be carried by Hence momentum beyond a'required point. the lock bar moves in advance of'the driver to first lock the pawl to the ratchet, after which the pawl is made to.movethe calculating mechanism.

Tumblers are shown at q. These tumblers can be in form of keys or actuated by keys suitably arranged. As a tumbler is swung on its pivot rit ismoved to astud or detentspro jecting from bar m thus bringing its tail in line with a stop t. Then as the tumbler is .further depressed it'mov'es first the lock bar I andthen both bars m and'n'until arrested by a stop it. The stops 5 are placed at varying distances to arrest the'mechanisni after a greater or less number has been noted.

The number wheels are supported by a shaft 9. i

The lower or free ends of bars m and a can be suitably steadied or guided. A comb 5 or cross bar entering slots in the bars or other means can be emploved. The upward or return'movement of the bars can be suitably limited as by a stop pin 6 arrested by contact with the comb or any suitably fixed part of the machine or frame:

In the construction shown in Fig. 1 the tumblers serve also as keys being provided with suitable finger buttons. The stops 8. limit the swing of the tumblers in one direction and stops 110 limit the swingin the other filed April 26, 1907, 7 T What I claim is direction.

I do not'herein claim anything set forth in my U.'S. Patent application Ser. .No; 370,492,

1 In a'caloulat ing machine, apawha 'ca'r rier therefor, a pawllock, a bar connected tothe lock,-and a bar connected to the carrier,-

said bars-being connected so that movement from one bar will be communicated to'the other.

2. In a calculating machinegua pawl, a car I rier therefor, a'pawl lock,;a bar connected to' bars.

the lock, and'abar connected to the carrier, said bars being connec'ted'so thatmovement from one bar a will 'becommunicated to the" and keys for actuating the tumblers.

4. In a'calculating machine,{apawl, a carriertherefor, a pawl look, a bar connected to j. the lock, and a bar connected to the carrier,

said bars being connected so that movement from one bar will be communicated to the 1 and a; detent for arresting the tumblers when other, tumblers pivoted to one, of the bars,

movingabar.

5; In a calculating machine, a pawl, a car; rier therefor, a pawl look, a bar connected to the lock, and a bar connected to the carrier, said bars being connected so that: movement from one bar will be communicated to the other, tumblers pivoted tonne of the bars, and a detent for ar'restin the tumblers when moving abar, one of sai bars having means a for limitingthe movement ot the tumbl Y on their pivots.

pawl, a lock for the pawl, an operating bar for 6.111 a calculating/machine an actuating the lock andan operating bar for the pa'wl,

keys for the tumblers.

"the bars.

and a, connectionbetweenthe bars'to allow the'pawl to be locked before being actuated. 7 In a calculating machine an actuating 5o p'awl,--a lock for the pawl, an operating bar' for the lock and an operating bar for the pawl,;a pin and slot connection for thebars and a tumbler for actuating the bars.

'8. .In a calculating. machine, an actuating ,pawl-and alock'therefor, sliding bars for re:

specti-vely actuating the .pawl and lock, tumblers on the lock actuating bar, and stops on the pawlfactuatingbar and made to coact h the. tumblers to arrest the bars at varying dista'nces.

9. A numbered wheel,-sliding bars, inter- "mediate. actuating mechanism between: the

sliding fbars and numbered wheel, tumblers mounted on one of the bars, and stops for the tumblers to limit the motion of the-wheel.

. 10; numbered wheel, slidin bars, inter: mediate actuating mechanism etween the sliding bars and numbered Wheel, tirmblers mounted 'on one of the bars, and stops for the tumblers to limit the motion of the wheel andl1. In a calculatin machine, a awl, a carrier therefor, a ratc et, a pawl loc which holds the pawl locked toits ratchet during 7 5 3 the entire actuation of the ratchet by the pawl, a bar connected to the lock, a,barcon-' *nected .to the pawl, means for moving the bars, and means for stoppin the bars;

.12. In a calculatin' .mac ine, a pawl,.a

. carrier therefor, a rate et, a pawl means for holding'the pawl locke'dto its ratchet during the entire actuation of the ratchet, a barconjn'ected to the lock, a bar-connectedto the pawl, and'means for moving and for stopping $5 Intestim'ony whereof I have hereunto set" my hand, in the presence of two subscribing witnesses.

win-LIAM Pj. QUENTELL.

Witnesses CHRISTIAN ALMs'rEAn,

EDWARD IEsNER; 

